/Engine/Plugins/Online/OnlineServices/Source/OnlineServicesCommon/Public/Online/SessionsCommon.h
Parameters for the GetSessionById call return
virtual [TOnlineResult](API\Plugins\OnlineServicesInterface\Online\TOnlineResult)< [FGetSessionById](API\Plugins\OnlineServicesInterface\Online\FGetSessionById) > GetSessionById ( [FGetSessionById::Params](API\Plugins\OnlineServicesInterface\Online\FGetSessionById\Params) && Params ) const